<template>
  <NavBar>
    <div slot="left" class="back" @click="backClick">
      <img src="@/assets/img/common/back.svg" alt="">
    </div>
    <div slot="center" class="titles">
      <div v-for="(item,index) in titles"
           class="item-title"
           :class="{active:currentIndex === index}"
           @click="titleClick(index)">{{item}}</div>
    </div>
  </NavBar>
</template>

<script>
  import NavBar from "@/components/common/navbar/NavBar";
  export default {
    name: "DetailNV",
    components:{
      NavBar
    },
  /*  props:{
      currentIndex: {
        type: Number,
        default: 0
      },
      titles: {
        type: Array,
        default: () => {
          return ['商品', '参数', '评论', '推荐']
        }
      }
    },*/
    data(){
      return{
        titles:['商品', '参数', '评论', '推荐'],
        currentIndex:0
      }
    },
    methods:{
      titleClick(index){
        this.currentIndex = index;
        //发射事件在详情页能够点击对应标题显示对应主题内容区
        this.$emit('titleClick',index)
      },
      backClick(){
        // this.$router.go(-1)
        this.$router.back()
      }
    }
  }
</script>

<style scoped>
  .titles{
    display: flex;
    font-size: 16px;
  }
  .item-title{
   flex: 1;
  }
  .active{
    color: var(--color-high-text)
  }
  .back img{
    margin-top: 11px;
  }
</style>